Wheel-cultivator



(No Model.)

A. O. BAKER.

WHEEL OULTIVATOR.

Patented Sept. 28, 1886.

N, PErEns. Phmwulhu m mr. Withinglnn, D. C.

UNITED STATES PATENT OFFICE.

ANDREXV C. BAKER, OF ALBION, MICHIGAN.

WHEEL-CULTIVATOR.

SPECIFICATION forming part of Letters Patent No. 349,972, datedSeptember 28, 1886.

Serial No. 206,791.

No model.)

To all whom it may concern:

Be it known that I, ANDREW O. BAKER, of Albion, in the county of Calhounand State of Michigan, have invented new and useful Improvements in\VheeLCultivators; and I do hereby declare that the following is a full,clear, and exact description thereof, reference being had to theaccompanying drawings, which form a part of this specification.

This invention relates to certain new and useful improvements inwheel-cultivators.

The object of the invention is to provide simple, effectual, andeconomical]y-constructed means for controlling the operation andposition of the teeth of the cultivator, whereby all the pliabilityusually found in a springtooth harrowis obtained with the teeth securedto a rigid standard.

The invention consists in the peculiar construction of the parts andtheir various combinations and operation, as more fully hereinafterdescribed.

Figure 1 is a perspective view of my improved wheel-cultivator, takenfrom the rear. Fig. 2 is a vertical central section through the machineon the line of the draft-pole. Fig. 3 is asectional detail.

In the drawings which accompany this specification and form a partthereof, A represents a rectangular frame, to the ends of which, bymeans of stubaxles, the wheels B are secured in the usual manner, saidstubaxles being vertically adjustable upon the ends of the frame in amanner well known in the construction of implements of this class. Thetwo ends of the frame are connected together by means of two or morebars or girts, to the rear face of which are secured ears (1, havingdownward prolongations below the bar, as shown, to form more firmbearings for the curved standards 0, which carry the teeth D at one end,while the opposite end is pivotally secured between the ears 0.

E are square rock-bars having journals formed on their ends, which areinserted in the boxes b on the ends of the frame, so as to bring eachrock-bar forward of a tooth-carrying bar. Curved springs F are securedto each of the rock-bars E, and these springs are so formed, as shown inFig. 3, as to engage with the under side of such rock-bar passing up thefront side and curving downward to the rear, where they terminate in aloop, 0, and each spring is secured in its position upon the rock-bar bymeans of a clip, G, passing diagonally around such bar and the embracingend of the spring. Links H connect such springs with the standards, theupper end of such links being secured to the springs by a bolt passingthrough the loop of the spring and the upper ends of the links, whilethe lower ends of the links are secured one on each side of the standardby a bolt passing through the same.

I is a bar secured by means of bolts to the upper end of the levers J,the lower ends of which are secured to the rock-bars E in such a mannerthat the movement of the lever to thefront or rear will partially rotatesuch rock-bars in their bearings.

K is a springlatch lever of the ordinary construction, the lower end ofwhich is pivoted to the tongue L, to which is also secured the toothedsegment M, such spring-latch lever being secured also to the bar I bymeans of a bolt, such spring-latch lever and segment being such as isordinarily employed fora like purpose. It will be seen that by this construction the efficiency of the springs-sueh as are ordinarily employedin springtooth cultivators-is retained, while a better result isproduced by the attachment of the teeth to rigid arms pivotally securedto the cross-bars of the frame, and connected as they are with thesprings, as described.

\Vhat I claim as my invention is* 1. In a wheel-cultivator, thecombination, with the frame and rocker-arm journaled therein, of therigid tooth-arm pivoted at one end to said frame, the spring connectedwith the rocker-arm, and the link pivotally eonnected to said tooth-armand spring,substair tially as described.

2. In a wheel-cultivator, a spring connected with a rockerarm and withthe standard, which carries a tooth, in combination with the meansdescribed for giving partial rotation to the rocker-arm, substantiallyas and for the purposes specified.

3. In awheel-cultivator, the combination of the frame havingvertically-adjustable wheel- V ing such bars, substantially as and forthe purcarrying stub-axles, ears secured to the rear poses set forth.

face of the cross-bars of the frame, to which are pivotally secured thecurved standards, 5 which carry the teeth, links connecting suchWitnesses:

standards with springs, which are secured to H. S. SPRAGUE,-

rocker-bars, and the means described for rock- CHAS; THURMAN.

ANDREW C. BAKER.

